Usually if your printer can print directly on an inkjet printable discit has software. Let us know if you have EPSON I have a pdf file that describes
how to create the image in some other graphics editor. Photoshop, Gimp,
PaintShop Pro, etc.
If you dig around a bit, you'll find free-ware programs for label creation -- start with the folks that make labels. For more pro work years ago I used to scan in the label paper, creating a template from that in a vector graphics program like Corel Draw! or Freehand. A vector art app let's you use whatever images etc you want and allow you to basically trim & scale everything to fit.
One more point: If you're referring to paper labels that you stick onto the DVDs -- JUST DON'T DO IT! ;-)
There is some debate on the matter, but opinion is pretty strong that paper labels can chip off while being spun at high speeds in a DVD player, and some say that the glue on these labels can damage the disc itself.